Coiling machine for making paper tubes



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J. LUMPP COILING MACHINE FOR MAKING PAPER TUBES ifa ar g/ Sept 28, 1926. 1,601,253 v J. LUMPP COILING IVIAGHINELv FOR MAKING PAPER TUBES Filed Dec. 10, 1924 9 Sheets-Sheet 9 Patented Sept, 28, 19 26.

UNITED STATES PATENT OFFICE.

JACOB LUMPP, OF TUBINGEN, GERMANY.

COILING MACHINE FORJMAKING PAPER TUBES.

Application filed December 10, 1924. Serial No. 755,020.

The present invention relates to a coiling machine for making papertubes, more particularly those used in Connection with spinning. A y 7 Owing to their unsuitable shape and the roundabout movements and operation of .their parts, the existing machines of this kind can only be worked at low speeds, and

their output is therefore sma1l.- For exam ple some of the grips used, grip the paper article like shears, thus allowing the work to slipwhile the grips are being closed. In

addition, the clipsdescribe a cumbrous rotary movement'in order to bring the work into the proper working position parallel with the mandrel. Another likely source of difficulty was the lateral arrangement of the driving mechanism, operating through numerous intermediate levers and positive or open eccentrics with spiral springs. Moreover, the" existing dotting arrangements,

ple. positively-operated driving mechanism,

both for operating the grips and for moving the dofling device and the arrangement for applying the adhesive. By means of the present invention, the speed of the ma chine can be increased to nearly double that attainable hitherto, so that the output capacity is also doubled.

The machine is provided in addition, with a device enabling a paper-web of any I width to be tapered down at both edges, by

acontinuous'operation, and shape it intov tubes in known manner. 'With this object transversely adjustable grinding rollers against which the web is pressed by wooden guides in known manner, are arranged on both sides of the web.

Moreover, the machine is provided with a device consisting substantially of a crank drive and imparting a continuous shakingmotion to the suspended receptacle for the finished tubes. so that the tubes cannot stick together, or be thrown continuously to and In order to prevent the machine from keeping on running when some check has arisen in connection with the feeding of the paper to the coiling mandrel, the machine is also fitted with a stop motion which acts automatically when no tube or only an im perfect-tube has been formed on the mandrel. This arrangement consists substantially of a contact, which is established when the presser closing the tube on the mandrel descends below its usual position.

for pressing in the absence of, a paper tube,

.and touches the empty mandrel.

The accompanying drawings illustrate a typical embodiment of the'subject of the present invention. A

Fig. 1 is a front elevation of the tube forming machine according to the invention. Fig. 2 is a plan and Fig. 3 a side elevation of same. Fig. 4 is a section through the housing of a grinding roller,

transversely to the paper web. Figs. 5 and 6 show, a front and side elevation respectively of the adjustable eccentric drive operating the grips. Figs. 7 and 8 are a side ele-' vationand plan respectively of one of the grips. Figs. 9 and 10 show respectively a side elevation and plan of a gumming and closing device provided with rollers. Fig. 11 is a side elevation of the same device,

with prismatic presser and gummen. Figs.

12-14 show the automatic dofling mecha' nism, diagramatically and in detail views. Figs. 1517 are respectively a front elevation, side elevation and plan of the rack drive operating. the dofiing mechanism.

The paper web 2 is unwound from a rutatably mounted roll' 1 by means of feed rollers 3 and fed to a table 4. According to the invention it is drawn on the way through a bevelling device which 'bevels ofi' the two lateral edges of the web in one operation.

This device consists of two rotary grinding rollers 5 arranged one behind the other inthe path of the paper web, said' rollers being enclosed and mounted 'in box-like housings 6. Both the rollers are adjustable transversely in relation to the web on the bed .7, and can be set in accordance with the width of the web for the time being, by means of a setting device such as a spindle 8. i 4

The grinding rollers are driven, for ex ample by chains, either independently or from a common shaft.

direct to the feed rollers 3, or as shown in Fig. 1 led through the rollers of a rotary printing press, where it receives continuousl a printed impression of any desired kind The paper web prepared in this manner is next brought to the table 4 which is automatically raised and lowered by means of the cam, 15 and ram 16.

When the table is in top position, the web 2 is cut to size by means of two cutters 17 and then divided b a straight knife 18 into two equal blanks a ter the table has descended to the level of the horizontal axes of the two taper mandrels 19. The paper now divided into two blanks is seized by grips 20. and drawn into the fold in the mandrels. These mandrels are mounted horizontally in such a way that the cut edge of the paper blanks is inserted twice as deep at the tip as at the wide end. Consequently, the axis of the mandrel forms an acute 'angle with the cut edge of the paper blank.

Since the paper lies flush with the axis of the mandrels, the grips need only be moved a short distance in a straight line to insert the paper blanks into the slots in the mandrels.

The hitherto necessary rotary movement of the grips is dispensed with, the working of the machine being thereby simplified.

The rectilinear movement of the grips is effected independently for each by eccentric discs 21 respectively mounted on the-main shaft 22. (Figs. 5 and 6.) These discs are provided in accordance with the various movements of the grips with curved cam faces flattened in two places whereby by the movement and stoppage necessary. in gripping and delivering the paper blanks, are so regulated that the transition from repose to movement and vice versa, proceeds gradually and jerkiness'in the running of the machine whichwould damage the individual parts is prevented. The eccentric discs 21 are embraced by eccentric straps 23, with projecting edges and provided with a guide lug for a spring bolt 24. At its outer end this bolt is pivoted to a connecting rod 25 the movement of which is transmitted directto a slidinglever 26 articulated in a slide 27 working in guides 28 and carrying the grips 20. A spring 29 serves to keep the bowl 30 on the end of the spring bolt 24 uniformly pressed against the eccentric discs, so that there is no lost motion between the strap and disc. By means of this simplified form of drive with only a few positively connected arts, a considerable saving of power is efected in comparison with-existing drivin mechanism, and a far higher working spee can be attained.

Whereas, in existing forms of grips, the

operative edges are moved like shears, the

edges 31, of the grips according to the invention are moved in such a manner that they always remain parallel to each other.

(Figs. 7 and 8). Hence thepaper is gripped and released simultaneously and uniformly along its whole length, so that it can no longer slip or twist out of its proper position. The grips according to the invention consist of a fixed lower member 32, attached, to the slide 27 in any suitable way, and provided with a bearing boss 33 carrying the pivot pins 34 for the movable upper member 35. The gripping edges 31, are bent away .at right angles from their levers so as to lie parallel with the coiling mandrels. The pivot pin 34 is mounted in a raised position in consequence of which the upper member of the grip moves towards the manlower member and controlled by a spring 40,

engages the lug 41. The closing of tllOfZIlPS is effected in a similar manner by another rotating cam 42, which causes the catch 39 to release the depressed lever of the upper member, whereupon the spring 36 closes the grips and holds the paper fast.

To make tubes'of larger or smaller internal diameter, it was necessary in existing machines of the kind, to displace the spindles 43 of the mandrels in the axial direction, so as to draw in the paper blank at a point nearer the thicker end or nearer the tip of the taper mandrel. This method was a very cumbrous one.

According to the present invention. l' which each mandrel is served by its own grips the machine is adjusted for this purpose by increasing or diminishing the amphtude of the stroke of the grips. without :11 tering the position of the spindles (Fig 5).

According to the invention, ths a lpistment is effected by altering the effective length of the connecting rod 25. the link 45 between the connecting rod and the sliding lever being moved towards or away from the pivotal point 46 of the rod by means of a setting spindle 44. If the connecting rod 15 shortened by screwing-in the link 45, the stroke of the grips is also shortened, and the paper blank is drawn in nearer the thicker hand, a tube of smaller internal diameter 1s formed nearer the tip of the mandrel.

After the gripshave inserted the blank, in the fold of'the mandrel, the coiling process begins, accompanied according to the invention by the application of the adhesive to the paper in course of coiling. The adhesive is applied by means of a 'gumming device 47, the movement of which is. controlled by an eccentric disc 48 and spring 49. At each working operation, this device dips :into a vessel-50.fille'd with adhesive, and

then coated with adhesive, is moved by the spring 49 towards the mandrel 19, which however, it does not touch until the coiling begins. It then remains in contact with the tube in course of formation until the paper blank is coiled, whereupon it is again pressed down into the vessel 50 by the .eccentric disc 48. At the same moment, the presser 51 which is similarily controlled by an eccentric 52 and spring 53, is caused, to

bear against the tube for a brief period, and

effects the pressing and closing of the tube. By means of this arrangement, in which the application of the adhesive is effected only during the coiling process, all waste of adhesive and dirtying of the machine which forms a ready source of trouble are prevented.

The presser and the gumming device may be shaped in various Ways. According to Fig. 11 the presser consists of a prismatic bar 51, which is rotatably connected to the free end of a lever 54 by means of a connectm'g member 55, so that it can adjust itself to the-taper of the mandrel. This is essential in order that the presser may bear uniformly over the entire length of the tube and not unevenly.

The gumming device consists similarly of a prismatic bar 47, the surface of which, however, is provided with a groove for scooping up the adhesive, the bar itself being also rotatably connected to its lever 57 by means of a connectingmember 56.

Figs. 9 and 10 show another form of presser and gumming device. In this case the prismatic bars are replaced by a presser 'roller 58 and agumming roller 59, which are rotatably mounted in their forked con- -necting members and 56 by means of pivot ins or between points.

In t is case the presser roller is provided with a wiping device which removes the surplus adhesive forced out'of the tube dur ing the closing operation and collecting on the resser roller, the surplus being returned to t e vessel 50. This wiper consists of a metal strip 60 arranged on the connecting member 55, in ,such a position behind the ma be replaced by a brush or the like. y

The use of rollers in place of the prismatic presser bar and gumming device facilitates the uniform applicat1on of the adhesive and revents damage to the tube from sharp 'e ges.

According to the invention, the presser is combined with a stop-motion device for stopping the machine. As shown in Figs. 12-14 this consists of a contact member 61,

which is attached to a connecting member 55 for the presser and is thus also enabled to adapt itself to the taper of the mandrel. Opposlte this contact member is arranged a second contact bar 62. When a tube has been formed on the mandrel, these contacts cannot meet, being separated by a distance approximately corresponding to the thick ness of the tube. When, however, owing to any interruption in the feeding of the paper, there is no tube on the mandrel, the resser descends below its normal level, un er the pressure of the spring 53, until it touches the mandrel, thus closing the contacts. The same thing occurs if the tube has only been imperfectl formed, in which event the contact bar ta es a slanting position, so that the contacts meet on one'side or the other. -The current. circuit completed in this manner breaks the circuit of the driving motor by means of a control magne 63' or stops the machine in some other suitable way.

The ejecting of the finished tubes from the 1 mandrel 1S effected by a doifer 64 of known type, which is also positively operated (Figs. 15-17) without the employment of chains or springs. A pair of pinions 65 driven from the main shaft 22, transmits motion through a crank 66, to a double lever 67 which turns on a pivot 68 and is articulated to a rack 70 by means of 'a short lever 69. This rack carries the holder 71 (guided in a slot in the table) of the dofi'er 64 for the one mandrel, and by means of an intermediate pinion 72, operates a second rack 73, whichmoves the similarly mounted dofi'er 64 for the second mandrel at the same time, but in the opposite direction. The

abolition of all unreliable chains and springs -not stick together as hitherto. The driving mechanism consists, for example of acrank or eccentric 74 which drives an ecccntrlc rod 75, the latter being connected in turn Wlth the frame 76 of the wire-mesh rack 77. The frame 76 is of course rockabl mounted, for instance by being supporte on powerful fiat springs 78. It is immaterial whether the frame is single or composed of a number of superimposed stages.

I claim: v

1. A machine for coiling paper tubes comprising a feeding device for the paper; a grinding roller for beveling the edges of the paper; cutting means for said paper, said beveling taking place before the paper is out; means for driving said'feeding device and the grinding roller; and means for coiling the paper into tubes. 7

2. A machine for coiling paper tubes comprising a grinding roller for bevelling the edges of the paper, said paper being beveled before it is cut into blanks; and means for coiling the paper into tubes.

3. A machine for coiling paper tubes comprising a pair of grinding rollers arranged in series; means for adjusting each roller transversely relative to the paper web; and means for coiling the aper into tubes.

a. A machine for coiling paper tubes comprising a pair of grinding rollers arranged inseries; means for adjusting each roller transversely relative to the paper web; means for pressing the edges of the paper against the rollers; and means for coiling the paper into tubes.

5. A machine for'coiling paper tubes comprising apair of grinding rollers arranged in serles; means for adjusting each roller transversely relative to the paper web; an adjustable presser for forcing the edges of the paper against the rollers; and means for coiling the paper into tubes.

t3. A machine for coiling paper tubes compr1sing a feeding device for feeding a web of paper; a mandrel in the machine the axis of Which forms an acute angle with the direction of the edge of the paper blank, said acute angle being of such size that the cutedge ofv the paper blank is inserted about twice as deep at the tip as at the wide end of the mandrel; and means for coiling the paper around the mandrel to form the tubes.

7. A machine for coiling paper tubes comprising a feeding device for feedinga web of paper; a device for beveling the edges of the paper; a mandrel in the machine, the

axis of which forms an acute an le with to the mandrel; an eccentric disc for eachgripper; a rotating cam coacting with and actuating said gripper in order to open it;

a second cam rotating with the first cam and adapted to close the gripper; and means for actuating said gripping device controlled by the eccentric disc.

9. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a pair of mandrels upon which the blanks are coiled; a gripping device for each mandrel for feeding the blank to the mandrel; an eccentric disc for each gripper; a roller for each gripper adapted to be guided in its eccentric; and means for coiling the blanks on the mandrels.

10. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a-pair of mandrels upon which the blanks are coiled; a gripping device for each mandrel for feeding the blank to the mandrel; an eccentric disc for each gripper; a roller for each gripper adapted to be guided in its eccentric and being pressed by the action of a spring; and means for coilingthe blanks on the mandrels.

11. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a pair of mandrels upon which the blanks are coiled; a gripping device for each mandrel for feeding the blank to the mandrel; an eccentric disc and roller for each gripper; a connecting rod connecting the roller with the gripper; means for coiling the blanks on the mandrels; and means for adjusting the connecting rod in order to change the internal diameter of the tubes to be coiled.

12. A machine for coiling paper tubes I comprising a device for feeding and preparing blanks of paper; a pair of mandrels upon which the blanks are coiled; means for feedin the blanks to the mandrels; means for coiling the blanks on the mandrels; and. adjusting means for changing the internal diameter of the tubes to be coiled.

13. A machine for coiling paper tubes com rising a device for feeding and preparing lanks of paper; a pair of mandrels upon which the blanks are coiled; a 'pping device for each mandrel for feedi rig the blank to the mandrel; an eccentric disc and roller foreach gripper; a connecting rod connecting the roller with the gripper; means for coiling the blanks on the mandrels; and a settln spindle at one end of the connectin rod or changing the internal diameter of t e tubes to be coiled.

14. A machine for coiling paper tubes comprising a device for feeding and preparing lanks of paper; a mandrel upon which the blanks are coiled; and a gumming device intermittently operated and associated with the mandrel, said gumming device comprising a prismatic bar having a groove in its upper surface which-is adapted to apply the required amount of 'gum only to the portions of the blank, while on the mandrel, which are to be. secured together.

' blanks arecoiled; a gumming device as-' 15. A machine for colling' paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; a gripping device for feeding the blanks to the mandrel,

the edges of said gripping device being arranged parallel to the surface of the mandrel and moving parallel to one another when opening and gripping; means for coiling the s the grip moving in acircular path towards the mandrel and its fulcrum being raised over the axis of the mandrel; means for coiling the paper blank on the mandrel; and means for operating said grip-ping device.

17 A machine for coiling paper tubes comrising a device for feeding and preparing lanks of paper; a mandrel upon which the sociated with the mandrel for applying gum to the paper blank on the mandrel; means for bringing said gumming device into operative position against the blank of paper to be gummed when ablank of paper is wound around the mandrel and to remove said gumming device into inoperative posit-ion at a point near the last winding of the tube; and a presser for closing up the formed tube. a

7 18. A, machine for coiling paper tubes comprising a devicefor feeding andpreparing blanks of paper; a mandrel upon which the blanks are coiled; a gumming device associated with the mandrel and adapted to apply gum to the blank while on the mandrel; a presser for closing up the formed tube; and means for operating said presser when the gumming device is moved into inoperative position,

19. A machine for coilingfpaper tubes comprising a device for feeding and preparing blanks of paper; a. mandrel upon which the blanks are coiled; a s ring actuated gumming device associate with the mandrel and adapted to apply gum to the blank while on the mandrel; a presser for closing up the formed tube; and eccentrics for controlling said gumming device and the paring blanks of paper; a mandrel upon which the blanks are coiled; a spring actuated gumming device associated with'the mandrel and adapted to apply gum to the blank while on the mandrel; a presser for closing up the formed tube; and eccentrics for controlling said gumming device and presser, each consisting of a roller r otatably mounted between the ends of a forklike bearing device, said bearing device being ro-- tatably connected to the ends of spring actuated levers.

'21. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; a gumming device associated with the mandrel and adapted to apply gum to the blank; and a wiper' for returning an excess supply of gum to a receptacle.

22. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; a gumming device associated with the mandrel and adapt?- ed to apply gum to the blank while on the mandrel; a presser for. closing up the formed tube; means for operating said gummingdeing a prismatic bar which is adapted to apply the required amount of gum only to the portions of the blank, while on the mandrel, which are to be secured together;

24. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a pairof mandrels upon which the blanks are coiled; means for coiling and gumming the blanks around the mandrels; and a air of doifers adapted to reciprocate in orii tubes from the mandrels.

25. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; a spring actuated gumming device associated with the 'mandrel and adapted to apply gum to the blank while on the mandrel; a presser for closing up the formed tube; anda pair of doffers adapted to reciprocate in order to strip the finished tubes from the mandrel, said dofi'ers'being moved in opposite directions in that both are connected to racks with an intermediate gear between them, one of said dofl'ersbeing driven by a crank pinion and arod. I 1

26. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; means for coiling er to strip the finished said blanks into tubes;'a receptacle for receiving the finished tubes; and a jigging device in order to keep the receptacle in constant motion in order to prevent the tubes from sticking to one another.

27. A method of coiling paper tubes which consists in the continuous and successive steps of bevelling the. edges of the pa er; cutting the paper into blanks; and coi ing and pasting the blank into a tube.

28. A machine for coiling paper tubes comprising 'a device forv feeding and preparing blanks ,of paper; a mandrel upon which the blanks are coiled; a spring actuated ummin device associated with the mandrel and a apted to apply gum to the blank while on the mandrel; a resser for closing up the formed tube; an eccentrics for controlling said gummm device and presser, each consisting of a ro ler rotatably mounted between the ends of a bearing device.

29. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; and an auto matic stop-motion device associated with said mandrel and adapted to actuate when vno blank is on the mandrel.

30. machine for coiling paper tubes comprising a device for feeding and preparmg blanks of, paper; a mandrel upon whichthe blanks are coiled; a presser roller for said mandrel; and means associated with;

32. A machine fins, coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks .are coiled; a presser for closing up the formed tube on the mandrel; and an automatic stop-motion device associated with the presser including an electric circuit, said device being adapted to actuate and stop the machine when the presser falls below its normal level due to no blank being on the mandrel.

33. A machine for coiling paper tubes comprising a device for feeding and reparing blanks of paper; means for coi ing said blanks into tubes; a s ring-mounted receptacle for receiving the nished tubes; and a jigging device in order to keep the receptacle in constant motion in order to prevent the tubes from sticking to one another.

34. A machine for coiling paper tubes comprising a device for feedin and pre aring blanks of paper; a mandre upon w 'ch the blanks are coiled; a spring-pressed presser for coiling the blanks around the mandrel; a spring-actuated g device for applying gum to the blanks; and an eccentric disc for operating said presser and gumming device.

35. A machine for coiling paper tubes comprising a mandrel upon which the tubes are coiled;and a gumming device intermittently operated and associated with the mandrel, said gumming device comprising a prismatic bar havin a groove in its upper surface which is a apted to apply the required amount of gum only to the portions of the blank, While on the mandrel, which are to be secured together.

36. A machine for coiling paper tubes comprising a device for feedin and preparing blanks of 'paper; a mandre upon which the blanks are coiled; a vessel adapted to contain gum; and a umming device associated with said man rel and comprising a prismatic bar having a groove in its upper surface which is adapted to dip into the vessel and carry the'required amount of gum to the portions of the blank, while on the mandrel, which are to be secured together.

'37 A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; a vessel adapted to contain gum; a gumming device associated with said mandrel and comprising a prismatic. bar having a groove in its upper surface which is adapted to dip into the vessel and carry the required amount of gum to the portions of the blank, while on the mandrel, which are to be secured together; and means for intermittently operating said gumming. device in order to convey a fresh supply. of gum from the vessel each time a new blank is coiled on the mandrel.-

38I A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; a vessel adapted to contain gum; a gumming device associated with said mandrel and comprising a prismatic bar having a groove in its upper surface which is adapted to dip into the vessel and carry the required amount of gum to the portions of the blank, while on the mandrel, which are to be secured together; and an eccentric disk and spring for intermittently operating said gumming device in order to convey a resh supply of gum from the Vessel each time a new blank is coiled on the mandrel.

39. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; a vessel adapted to contain gum; a gumming device assosurface'which is adapted to dip into the vessel and"' carry the required amount of gum to the portions of the'blank; while on the mandrel, which are to be secured together; a press'er? for closing up the formed tube; and means for intrmittently operating said gumming' device; and said presser, in order to convey a fresh supply of gum from the vessel each time a new blank is- I coiled'on the mandrel and=to press the por-' tions of the. blank securely together.

40. A machine for coiling aper tubes comprising a mandrel upon which the tubes are coiled; and a gumming device intermittently operated and associated with the mandrel, said .gumming device comprising a prismatic bar which is adapted to apply the required amount of gum only to the portions of the'blank, while on the mandrel, which are to be secured together.

41. A machine for coiling paper tubes comprising a device for feeding and preparing blanks of paper a mandrel upon which the blanks are coiled; a gumming device as.- sociated with the mandrel for ap lying 'gum to the paper blank on the mandiel; means for actuating said gummin device including means for applying only therequired amount of gum to the blank; and a presser for closing up the formed t'ube.

paring blanks of .for coilingthe b anks upon the mandrel;

42. A machine for coiling paper tubes comprising a device for feeding and preaper; a mandrel; means and a gmnming device intermittently operated and associated with the mandrel, said Eumming device comprising a prismatic bar aving a groove in itsupper surface which is adapted to apply the required amount of gum only to the portions of the blank, While on the mandrel, which are to be secured together.

43. A machine for coiling paper. tubes comprising a device for feeding and preparing blanks of paper; a mandrel upon which the blanks are coiled; means for coiling the blanks upon the mandrel; a vessel adapted to contain gum; a gummi-ng device associated with said mandrel and comprising a prismatic bar having a groove in its upper surface which is adapted to dip into the vessel and carry the required amount of gum to the portions of the blank,. while on the mandrel, which are to be secured together; and means for intermittently operating said gumming device in order to convey a freshsupply of, gum from the vessel each time a new blank is coiled on the mandrel.

In testimony whereof I affix my signature.

JACOB LUMPP. 

